Edward n



B. N. DIGKERSON. GAS MIXER.

Pat'ented Aug. 4, 1896.

UNITED STATES PATENT Erich,

EDNVARD N. DIOKERSON, OF NEW' YORK, N. Y.

GAS-MIXER.

SPECIFICATION forming part of Letters Patent No. 565,157, dated August4, 1896.

Application filed May 15,1895. $erial No. 549,365. (No model.)

To aZZ whom it may concern:

Be it known that I, Enwnnn N. DIoKERsoN, of No. 253 Broadway, in thecity, county, and State of New York, have invented a new and usefulImprovement in Automatic Gas-Mixers, of which the following is a full,true, and exact description, reference being had to the accoinpanyingdrawings.

This invention relates to an apparatns by means of which two gases maybe Iningled together in determinecl proportions, and it is especiallyapplicable to mingling acetylene and coal or water gas, or acetylene andair.

Myinvention consists of two automaticallycontrolled valves whichregulate the supply of the two gases to a miXing-chamher, whichmiXing-chamber is a movable holder, itself Operating these valves, so asto afford a constantly equal ratio between their openings, however widethey may be opened. These valves are arranged in a single tubularsupport with an external sliding tube, and the relation of the gases canbe adj usted by the rotation of the external tube.

My invention will be readily understood from the accompanying drawings,in which- Figure 1 represents a vertical cross-section of Iny completeapparatus; Fig. 2, a section through Fig. 1 on the line 2 2; Fig. 3, asection through Fig. 1 on the line 3 3; and Fig. 4, the same view asFig. 3, the external tube being slightly rotated so as to practicallyclose the smaller valve.

As arranged my apparatus is designed to supply up to about twenty percent. of acetylene to a corresponding amount of illuminating-gas,thereby increasing its illuminating power.

My apparatus consists generally of an extern al water-seal casing A,having an internal bell-governor B, which may be suitablycounterbalanced. Beneath the Chamber of the governor B are the chambersS T, divided by the central partition H, which divides a central tubeGinto two chambers. On the outside of the tube G is the tube F, fittingpractically gas-tight upon the inner tube G. This is connected,preferably, by a flexible connection to the holder B. The chalnber Sconnects with the acetylene-inlet D, and the Chamber T with thegas-inlet C. The outlet of the governor is shown at E. Correspondingopenings N M through the tubes G F are shown for the acetylene, andopenings R P for the gas. Surrounding the lower end of the tube G is theadjustable ring J, provided with setscrew' V. Upon the ring or collar Jis mounted the arin K, having inwardly-projecting finger L, which entersinto the slot M of the tube F, which is extended somewhat above thecorresponding slot or Opening N, so as not to interfere with thatOpening. This finger L serves as a guide for the motion of the tube F.The slotR is somewhat narrower than the slot P, as shown clearly inFigs. 3 and 4.

In the position shown in Fig. 3 both the acetylene and gas openings areopened to their fullest extent.

In Fig. 4 the lower collar J has been so adj usted as that the openingsM N are practically closed, but the openings R P are still open to theirf ullest extent by reason of the excess of width of the Opening P. It isobvious that any interinediate degree of regulation can be readilyobtained by the adjustnient of the collar J.

The Operation is of course .readily understood. The openings beingadjusted to the proper relative proportions, gas entering through thepipes D and O is governed by the governor B, which closes the ports ofthe tube G, connecting with the ch ambers S and T, When the governor Bhas risen, and the inflow of the gases is governed by the outflowthrough the pipe E.

I am aware of the fact that a double regulation of gases, substantiallysimilar in principle, has been heretofore patented to E. A. Burdick onthe th day of July, 1881, No. ehSO. In my apparatus but a single valveis employed, operated from the governor by a fiexible connection, sothat the valve is not tipped by any tipping of the governor. In theBurdick device the two inlet-valves are connected with dierent parts ofthe governor B, and therefore the governor B will not operate themuniforinly by reason of its tipping in Operation. There is an additionalamount of friction also in these pipes which I avoid by my contrivance,wherein I substitute one pipe with two valves for two pipes with suchvalves.

It is obvious that though the governor B is, by the governor B, and theregistering openin my opinion, the best form, the control of ings in thetubes G and J, substantially a-S the tube F might be by Et diaphragm.described.

What I claim as my invention, and desire In testimony Whereof I havesigned my 15 5 to secure by Letters Patent, isu name to thisspecifieation in the presence of The combination in a gas-mixer, of thegovtwo subseribing Witnesses. ernor B, provided with an Upper Chamberand the two lower ehambers, the partition I'Ldivid- E' N' DICKERbON' ingthe said lower ehambers and extending Titnessesz 1o into the interiortube G, the exterioi` tube J, ANTHONY GREF,

eireumferentialiy adjustbie and supported II. COUTANT.

